Puberty and Estrous Cycle

Question 1

Stage of sexual maturation

Answer 1

Puberty

Question 2

How is puberty marked in males?

Answer 2

1. desire to mate
2. ability to produce sperm

Question 3

How is puberty marked in females?

Answer 3

estrus cycle

Question 4

When does a heifer reach sexual maturity?

Answer 4

6-12 months

Question 5

When does a swine reach sexual maturity?

Answer 5

4-8 months

Question 6

When does a ewe reach sexual maturity?

Answer 6

5-9 months

Question 7

When does a bitch reach sexual maturity?

Answer 7

6-12 months

Question 8

When does a mare reach sexual maturity?

Answer 8

10-12 months

Question 9

When does a rabbit reach sexual maturity?

Answer 9

5-8 months

Question 10

(True or False)
Is fowl also marked sexually mature when in estrus?

Answer 10

False, fowl don’t have an estrus cycle

Question 11

Phase of estrous cycle where the follicle matures to release the egg

Answer 11

Proestrus

Question 12

Phase of estrus cycle where the feamle is seually receptive to the male for mating

Answer 12

Estrus

Question 13

Phase of estrus cycle where the reproductive tract becomes less active

Answer 13

Diestrus

Question 14

Animals that have only one estrus cycle per year are called

Answer 14

Monoestrus

Question 15

Example of monoestrus animals

Answer 15

Dogs

Question 16

Animals that have more than one estrus cycle per year

Answer 16

Polyestrus

Question 17

Esample of polyestrus animals

Answer 17

Cattle, swine, sheep horses

Question 18

Animals that are polyestrus, but only breed once a year to match with the season(Fall, winter)

Answer 18

Shhep and horses

Question 19

When an animal is not in heat

Answer 19

anestrus

Question 20

________ daylight increases FSH production in sheep, while _________ daylight stimulates FSH production in horses

Answer 20

Decreasing, Increasing

Question 21

These animals have an estrous cycle of 21 days

Answer 21

1. Cattle
2. Swine
3. Horses

Question 22

Sheep have _____ of estrous cycle

Answer 22

16 days

Question 23

Rabbits have an estrous cycle of ____ days

Answer 23

15

Question 24

length of Estrus of the following animals

Answer 24

C- 18 hours
Sw- 3 days
Sh- 30 hours
H- 5 days
D- 9 days

Question 25

This animal shows estrus signs by lifting its tail and the winking of the vulva

Answer 25

Mare

Question 26

This animal shows it is in heat when it grunts loudly and its ears are erect

Answer 26

Sow

Question 27

This is done manually to know when a female animal is inheat

Answer 27

back pressure test

Question 28

This animal shows few signs of estrus, from mucus discharge to seeking other males

Answer 28

Ewe

Question 29

This animal, when in estrus has a bloody discharge and its appetite may increase or decrease

Answer 29

bitch

Question 30

This animal, when in heat, has a reddish-purple slightly swollen vulva

Answer 30

Doe

Question 31

3 factors to consider when breeding

Answer 31

1. Physical size 2. Age 3. Breed

Question 32

Causes of Anestrus

Answer 32

1. Pregnancy 2. Season 3. Pathology 4. Stress 5. Nutrition 6. Presence of offspring

Question 33

automatic LH surge, ovulation, form functional CL that exists for definite period

Answer 33

Spontaneous Ovulation

Question 34

Example animals of Spontaneous Ovulation

Answer 34

ruminants, sow, primates mare, dog

Question 35

LH surge, ovulation, form functional CL only occurs when mating happens

Answer 35

Spontaneous Ovulation with mating

Question 36

Example animals of Spontaneous ovulation with mating

Answer 36

rat and mouse

Question 37

needs mating before ovulation occurs & CL formation absence of mating - leads to follicular regression

Answer 37

Reflex or Induced Ovulation

Question 38

Example animals of Reflex or Induced ovulation

Answer 38

Rabbit cat ferret camel

Question 39

space in the follicle is called

Answer 39

antrum